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<a href="clock__type_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">/* Flow</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment"> * Copyright 2023 Akamai Technologies, Inc.</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment"> *</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment"> * Licensed under the Apache License, Version 2.0 (the</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment"> * &quot;License&quot;); you may not use this file except in</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment"> * compliance with the License.  You may obtain a copy</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment"> * of the License at</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="comment"> *</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span><span class="comment"> *   https://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span><span class="comment"> *</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="comment"> * Unless required by applicable law or agreed to in</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="comment"> * writing, software distributed under the License is</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="comment"> * distributed on an &quot;AS IS&quot; BASIS, WITHOUT WARRANTIES OR</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span><span class="comment"> * CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="comment"> * See the License for the specific language governing</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="comment"> * permissions and limitations under the License. */</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span><span class="comment"></span> </div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span><span class="comment">/// @file</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span><span class="comment"></span><span class="preprocessor">#include &quot;<a class="code" href="clock__type__fwd_8hpp.html">flow/perf/clock_type_fwd.hpp</a>&quot;</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span><span class="preprocessor">#include &quot;<a class="code" href="util_2util_8hpp.html">flow/util/util.hpp</a>&quot;</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span><span class="preprocessor">#include &quot;<a class="code" href="string__ostream_8hpp.html">flow/util/string_ostream.hpp</a>&quot;</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span> </div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceflow_1_1perf.html">flow::perf</a></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span>{</div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span> </div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"><a class="line" href="structflow_1_1perf_1_1Time__pt__set.html#af4b93cb0638c3d0bcfcf36903f0a3e46">   26</a></span><a class="code hl_struct" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a> <a class="code hl_function" href="namespaceflow_1_1perf.html#af4b93cb0638c3d0bcfcf36903f0a3e46">operator-</a>(<span class="keyword">const</span> <a class="code hl_struct" href="structflow_1_1perf_1_1Time__pt__set.html">Time_pt_set</a>&amp; to, <span class="keyword">const</span> <a class="code hl_struct" href="structflow_1_1perf_1_1Time__pt__set.html">Time_pt_set</a>&amp; from)</div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span>{</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span>  <a class="code hl_struct" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a> result;</div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span>  <span class="comment">// Could use some algorithm probably but speed is important, and I just don&#39;t care to risk it here for some syn-sugar.</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> clock_type_idx = 0; clock_type_idx != result.<a class="code hl_variable" href="structflow_1_1perf_1_1Duration__set.html#ae7d89b9e16f45dc59b27092e0496ce4f">m_values</a>.size(); ++clock_type_idx)</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span>  {</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span>    result.<a class="code hl_variable" href="structflow_1_1perf_1_1Duration__set.html#ae7d89b9e16f45dc59b27092e0496ce4f">m_values</a>[clock_type_idx]</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span>      = to.<a class="code hl_variable" href="structflow_1_1perf_1_1Time__pt__set.html#a9867f05832f22c6aceb340c0ba697dbc">m_values</a>[clock_type_idx] - from.<a class="code hl_variable" href="structflow_1_1perf_1_1Time__pt__set.html#a9867f05832f22c6aceb340c0ba697dbc">m_values</a>[clock_type_idx]; <span class="comment">// Can be negative; allowed.</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span>  }</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span>  <span class="keywordflow">return</span> result;</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span>}</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span> </div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"><a class="line" href="structflow_1_1perf_1_1Duration__set.html#a1c1e96770f8264d938ac09546a7cdb95">   38</a></span><a class="code hl_struct" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a>&amp; <a class="code hl_function" href="namespaceflow_1_1perf.html#a1c1e96770f8264d938ac09546a7cdb95">operator+=</a>(<a class="code hl_struct" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a>&amp; target, <span class="keyword">const</span> <a class="code hl_struct" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a>&amp; to_add)</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span>{</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span>  <span class="comment">// Same note as above re. algorithms.</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> clock_type_idx = 0; clock_type_idx != target.<a class="code hl_variable" href="structflow_1_1perf_1_1Duration__set.html#ae7d89b9e16f45dc59b27092e0496ce4f">m_values</a>.size(); ++clock_type_idx)</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span>  {</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span>    target.<a class="code hl_variable" href="structflow_1_1perf_1_1Duration__set.html#ae7d89b9e16f45dc59b27092e0496ce4f">m_values</a>[clock_type_idx] += to_add.<a class="code hl_variable" href="structflow_1_1perf_1_1Duration__set.html#ae7d89b9e16f45dc59b27092e0496ce4f">m_values</a>[clock_type_idx]; <span class="comment">// All can be negative technically.</span></div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span>  }</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span>  <span class="keywordflow">return</span> target;</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span>}</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span> </div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"><a class="line" href="namespaceflow_1_1perf.html#a46efb90b848b87bb7bbaa3e415616e6e">   48</a></span><a class="code hl_struct" href="structflow_1_1perf_1_1Time__pt__set.html">Time_pt_set</a>&amp; <a class="code hl_function" href="namespaceflow_1_1perf.html#a1c1e96770f8264d938ac09546a7cdb95">operator+=</a>(<a class="code hl_struct" href="structflow_1_1perf_1_1Time__pt__set.html">Time_pt_set</a>&amp; target, <span class="keyword">const</span> <a class="code hl_struct" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a>&amp; to_add)</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span>{</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span>  <span class="comment">// Same note as above re. algorithms.</span></div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> clock_type_idx = 0; clock_type_idx != target.<a class="code hl_variable" href="structflow_1_1perf_1_1Time__pt__set.html#a9867f05832f22c6aceb340c0ba697dbc">m_values</a>.size(); ++clock_type_idx)</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span>  {</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span>    target.<a class="code hl_variable" href="structflow_1_1perf_1_1Time__pt__set.html#a9867f05832f22c6aceb340c0ba697dbc">m_values</a>[clock_type_idx] += to_add.<a class="code hl_variable" href="structflow_1_1perf_1_1Duration__set.html#ae7d89b9e16f45dc59b27092e0496ce4f">m_values</a>[clock_type_idx]; <span class="comment">// All can be negative technically.</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span>  }</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span>  <span class="keywordflow">return</span> target;</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span>}</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span> </div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"><a class="line" href="structflow_1_1perf_1_1Duration__set.html#a129032bde1082e8f2681669acf6bf03d">   58</a></span><a class="code hl_struct" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a>&amp; <a class="code hl_function" href="namespaceflow_1_1perf.html#a129032bde1082e8f2681669acf6bf03d">operator*=</a>(<a class="code hl_struct" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a>&amp; target, uint64_t mult_scale)</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span>{</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span>  <span class="comment">// Same note as above re. algorithms.</span></div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> clock_type_idx = 0; clock_type_idx != target.<a class="code hl_variable" href="structflow_1_1perf_1_1Duration__set.html#ae7d89b9e16f45dc59b27092e0496ce4f">m_values</a>.size(); ++clock_type_idx)</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span>  {</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span>    target.<a class="code hl_variable" href="structflow_1_1perf_1_1Duration__set.html#ae7d89b9e16f45dc59b27092e0496ce4f">m_values</a>[clock_type_idx] *= mult_scale;</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span>  }</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span>  <span class="keywordflow">return</span> target;</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span>}</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span> </div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"><a class="line" href="structflow_1_1perf_1_1Duration__set.html#aff603762f38b9e3e3d50b833e09c3f91">   68</a></span><a class="code hl_struct" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a>&amp; <a class="code hl_function" href="namespaceflow_1_1perf.html#aff603762f38b9e3e3d50b833e09c3f91">operator/=</a>(<a class="code hl_struct" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a>&amp; target, uint64_t div_scale)</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span>{</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span>  <span class="comment">// Same note as above re. algorithms.</span></div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> clock_type_idx = 0; clock_type_idx != target.<a class="code hl_variable" href="structflow_1_1perf_1_1Duration__set.html#ae7d89b9e16f45dc59b27092e0496ce4f">m_values</a>.size(); ++clock_type_idx)</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span>  {</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span>    target.<a class="code hl_variable" href="structflow_1_1perf_1_1Duration__set.html#ae7d89b9e16f45dc59b27092e0496ce4f">m_values</a>[clock_type_idx] /= div_scale;</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span>  }</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span>  <span class="keywordflow">return</span> target;</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span>}</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span> </div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"><a class="line" href="namespaceflow_1_1perf.html#aa26027bcba9c000350811727f0a8fc21">   78</a></span>std::ostream&amp; <a class="code hl_function" href="namespaceflow_1_1perf.html#a5bb3a068357516df714c4266ec5c3df4">operator&lt;&lt;</a>(std::ostream&amp; os, <a class="code hl_enumeration" href="namespaceflow_1_1perf.html#ad61fb186191e4bb824d14601d11a2eb0">Clock_type</a> clock_type)</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span>{</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span>  <span class="keywordflow">switch</span> (clock_type)</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span>  {</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span>    <span class="keywordflow">case</span> <a class="code hl_enumvalue" href="namespaceflow_1_1perf.html#ad61fb186191e4bb824d14601d11a2eb0a8cbf506eda585c026dfb5b72c402d342">Clock_type::S_REAL_HI_RES</a>: <span class="keywordflow">return</span> os &lt;&lt; <span class="stringliteral">&quot;real_hi&quot;</span>;</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span>    <span class="keywordflow">case</span> <a class="code hl_enumvalue" href="namespaceflow_1_1perf.html#ad61fb186191e4bb824d14601d11a2eb0ae06b569eb44aff6a567186f4eddb12ed">Clock_type::S_CPU_USER_LO_RES</a>: <span class="keywordflow">return</span> os &lt;&lt; <span class="stringliteral">&quot;cpu_usr_lo&quot;</span>;</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span>    <span class="keywordflow">case</span> <a class="code hl_enumvalue" href="namespaceflow_1_1perf.html#ad61fb186191e4bb824d14601d11a2eb0a1490431155a134162390180995550ca7">Clock_type::S_CPU_SYS_LO_RES</a>: <span class="keywordflow">return</span> os &lt;&lt; <span class="stringliteral">&quot;cpu_sys_lo&quot;</span>;</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno">   85</span>    <span class="keywordflow">case</span> <a class="code hl_enumvalue" href="namespaceflow_1_1perf.html#ad61fb186191e4bb824d14601d11a2eb0ac5c54159101dbdb580f0b16a9397d6f3">Clock_type::S_CPU_TOTAL_HI_RES</a>: <span class="keywordflow">return</span> os &lt;&lt; <span class="stringliteral">&quot;cpu_total_hi&quot;</span>;</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span>    <span class="keywordflow">case</span> <a class="code hl_enumvalue" href="namespaceflow_1_1perf.html#ad61fb186191e4bb824d14601d11a2eb0a93867c73fb6ef991268c0052153344c2">Clock_type::S_CPU_THREAD_TOTAL_HI_RES</a>: <span class="keywordflow">return</span> os &lt;&lt; <span class="stringliteral">&quot;cpu_thread_total_hi&quot;</span>;</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span>    <span class="keywordflow">case</span> <a class="code hl_enumvalue" href="namespaceflow_1_1perf.html#ad61fb186191e4bb824d14601d11a2eb0a6fba12db09e5bebfaa04f6372c41c2cf">Clock_type::S_END_SENTINEL</a>: assert(<span class="keyword">false</span> &amp;&amp; <span class="stringliteral">&quot;Should never print sentinel.&quot;</span>);</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span>  }</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span>  assert(<span class="keyword">false</span> &amp;&amp; <span class="stringliteral">&quot;Should be unreachable; compiler should warn if incomplete switch.&quot;</span>);</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span>  <span class="keywordflow">return</span> os;</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno">   91</span>}</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno">   92</span> </div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"><a class="line" href="structflow_1_1perf_1_1Duration__set.html#a4cff304aa30be9d5810f90101d32b761">   93</a></span>std::ostream&amp; <a class="code hl_function" href="namespaceflow_1_1perf.html#a5bb3a068357516df714c4266ec5c3df4">operator&lt;&lt;</a>(std::ostream&amp; os, <span class="keyword">const</span> <a class="code hl_struct" href="structflow_1_1perf_1_1Duration__set.html">Duration_set</a>&amp; duration_set)</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span>{</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span>  <span class="keyword">using </span>std::flush;</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno">   96</span>  <span class="keyword">using </span><a class="code hl_function" href="namespaceflow_1_1util.html#a8afd30c50bcd670d45442df49d1da484">flow::util::ostream_op_to_string</a>;</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno">   97</span>  <span class="keyword">using </span><a class="code hl_class" href="classflow_1_1util_1_1String__ostream.html">flow::util::String_ostream</a>;</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span>  <span class="keyword">using </span>boost::chrono::microseconds;</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span>  <span class="keyword">using </span>boost::chrono::nanoseconds;</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span>  <span class="keyword">using </span>boost::chrono::round;</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span> </div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno">  102</span>  <span class="comment">// @todo Skip things not in m_which_clocks.</span></div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span> </div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno">  104</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> clock_type_idx = 0; clock_type_idx != duration_set.<a class="code hl_variable" href="structflow_1_1perf_1_1Duration__set.html#ae7d89b9e16f45dc59b27092e0496ce4f">m_values</a>.size(); ++clock_type_idx)</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno">  105</span>  {</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span>    <span class="keyword">const</span> <span class="keyword">auto</span>&amp; dur = duration_set.<a class="code hl_variable" href="structflow_1_1perf_1_1Duration__set.html#ae7d89b9e16f45dc59b27092e0496ce4f">m_values</a>[clock_type_idx];</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span>    os &lt;&lt; <a class="code hl_enumeration" href="namespaceflow_1_1perf.html#ad61fb186191e4bb824d14601d11a2eb0">Clock_type</a>(clock_type_idx) &lt;&lt; <span class="stringliteral">&quot;: &quot;</span>;</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span>    <span class="keywordflow">if</span> (dur.count() == 0)</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno">  109</span>    {</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno">  110</span>      os &lt;&lt; <span class="charliteral">&#39;0&#39;</span>; <span class="comment">// No units needed.</span></div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno">  111</span>    }</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno">  112</span>    <span class="keywordflow">else</span></div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno">  113</span>    {</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno">  114</span>      os &lt;&lt; round&lt;nanoseconds&gt;(dur) &lt;&lt; <span class="stringliteral">&quot;=~&quot;</span> &lt;&lt; round&lt;microseconds&gt;(dur); <span class="comment">// Prints units too.</span></div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno">  115</span>    }</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno">  116</span>    <span class="keywordflow">if</span> ((clock_type_idx + 1) != duration_set.<a class="code hl_variable" href="structflow_1_1perf_1_1Duration__set.html#ae7d89b9e16f45dc59b27092e0496ce4f">m_values</a>.size())</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno">  117</span>    {</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno">  118</span>      os &lt;&lt; <span class="stringliteral">&quot; | &quot;</span>;</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno">  119</span>    }</div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno">  120</span>  }</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno">  121</span>  <span class="keywordflow">return</span> os &lt;&lt; flush;</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno">  122</span>}</div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno">  123</span> </div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno">  124</span>} <span class="comment">// namespace flow::perf</span></div>
<div class="ttc" id="aclassflow_1_1util_1_1String__ostream_html"><div class="ttname"><a href="classflow_1_1util_1_1String__ostream.html">flow::util::String_ostream</a></div><div class="ttdoc">Similar to ostringstream but allows fast read-only access directly into the std::string being written...</div><div class="ttdef"><b>Definition:</b> <a href="string__ostream_8hpp_source.html#l00045">string_ostream.hpp:47</a></div></div>
<div class="ttc" id="aclock__type__fwd_8hpp_html"><div class="ttname"><a href="clock__type__fwd_8hpp.html">clock_type_fwd.hpp</a></div></div>
<div class="ttc" id="anamespaceflow_1_1perf_html"><div class="ttname"><a href="namespaceflow_1_1perf.html">flow::perf</a></div><div class="ttdoc">Flow module containing tools for profiling and optimization.</div><div class="ttdef"><b>Definition:</b> <a href="checkpt__timer_8cpp_source.html#l00024">checkpt_timer.cpp:25</a></div></div>
<div class="ttc" id="anamespaceflow_1_1perf_html_a129032bde1082e8f2681669acf6bf03d"><div class="ttname"><a href="namespaceflow_1_1perf.html#a129032bde1082e8f2681669acf6bf03d">flow::perf::operator*=</a></div><div class="ttdeci">Duration_set &amp; operator*=(Duration_set &amp;target, uint64_t mult_scale)</div><div class="ttdoc">Scales each Duration in the target Duration_set by the given numerical constant.</div><div class="ttdef"><b>Definition:</b> <a href="clock__type_8cpp_source.html#l00058">clock_type.cpp:58</a></div></div>
<div class="ttc" id="anamespaceflow_1_1perf_html_a1c1e96770f8264d938ac09546a7cdb95"><div class="ttname"><a href="namespaceflow_1_1perf.html#a1c1e96770f8264d938ac09546a7cdb95">flow::perf::operator+=</a></div><div class="ttdeci">Duration_set &amp; operator+=(Duration_set &amp;target, const Duration_set &amp;to_add)</div><div class="ttdoc">Advances each Duration in the target Duration_set by the given respective addend Durations (negative ...</div><div class="ttdef"><b>Definition:</b> <a href="clock__type_8cpp_source.html#l00038">clock_type.cpp:38</a></div></div>
<div class="ttc" id="anamespaceflow_1_1perf_html_a5bb3a068357516df714c4266ec5c3df4"><div class="ttname"><a href="namespaceflow_1_1perf.html#a5bb3a068357516df714c4266ec5c3df4">flow::perf::operator&lt;&lt;</a></div><div class="ttdeci">std::ostream &amp; operator&lt;&lt;(std::ostream &amp;os, const Checkpointing_timer::Checkpoint &amp;checkpoint)</div><div class="ttdoc">Prints string representation of the given Checkpoint to the given ostream.</div><div class="ttdef"><b>Definition:</b> <a href="checkpt__timer_8cpp_source.html#l00335">checkpt_timer.cpp:335</a></div></div>
<div class="ttc" id="anamespaceflow_1_1perf_html_ad61fb186191e4bb824d14601d11a2eb0"><div class="ttname"><a href="namespaceflow_1_1perf.html#ad61fb186191e4bb824d14601d11a2eb0">flow::perf::Clock_type</a></div><div class="ttdeci">Clock_type</div><div class="ttdoc">Clock types supported by flow::perf module facilities, perf::Checkpointing_timer in particular.</div><div class="ttdef"><b>Definition:</b> <a href="clock__type__fwd_8hpp_source.html#l00066">clock_type_fwd.hpp:67</a></div></div>
<div class="ttc" id="anamespaceflow_1_1perf_html_ad61fb186191e4bb824d14601d11a2eb0a1490431155a134162390180995550ca7"><div class="ttname"><a href="namespaceflow_1_1perf.html#ad61fb186191e4bb824d14601d11a2eb0a1490431155a134162390180995550ca7">flow::perf::Clock_type::S_CPU_SYS_LO_RES</a></div><div class="ttdeci">@ S_CPU_SYS_LO_RES</div><div class="ttdoc">Counterpart of S_CPU_USER_LO_RES, measuring processor time (kernel-level) spent by the current proces...</div></div>
<div class="ttc" id="anamespaceflow_1_1perf_html_ad61fb186191e4bb824d14601d11a2eb0a6fba12db09e5bebfaa04f6372c41c2cf"><div class="ttname"><a href="namespaceflow_1_1perf.html#ad61fb186191e4bb824d14601d11a2eb0a6fba12db09e5bebfaa04f6372c41c2cf">flow::perf::Clock_type::S_END_SENTINEL</a></div><div class="ttdeci">@ S_END_SENTINEL</div><div class="ttdoc">Final, invalid clock type; its numerical value equals the number of clocks currently supported.</div></div>
<div class="ttc" id="anamespaceflow_1_1perf_html_ad61fb186191e4bb824d14601d11a2eb0a8cbf506eda585c026dfb5b72c402d342"><div class="ttname"><a href="namespaceflow_1_1perf.html#ad61fb186191e4bb824d14601d11a2eb0a8cbf506eda585c026dfb5b72c402d342">flow::perf::Clock_type::S_REAL_HI_RES</a></div><div class="ttdeci">@ S_REAL_HI_RES</div><div class="ttdoc">Measures real time (not processor time), using the highest-resolution system clock available that gua...</div></div>
<div class="ttc" id="anamespaceflow_1_1perf_html_ad61fb186191e4bb824d14601d11a2eb0a93867c73fb6ef991268c0052153344c2"><div class="ttname"><a href="namespaceflow_1_1perf.html#ad61fb186191e4bb824d14601d11a2eb0a93867c73fb6ef991268c0052153344c2">flow::perf::Clock_type::S_CPU_THREAD_TOTAL_HI_RES</a></div><div class="ttdeci">@ S_CPU_THREAD_TOTAL_HI_RES</div><div class="ttdoc">Similar to S_CPU_TOTAL_HI_RES but applied to the calling thread as opposed to entire process.</div></div>
<div class="ttc" id="anamespaceflow_1_1perf_html_ad61fb186191e4bb824d14601d11a2eb0ac5c54159101dbdb580f0b16a9397d6f3"><div class="ttname"><a href="namespaceflow_1_1perf.html#ad61fb186191e4bb824d14601d11a2eb0ac5c54159101dbdb580f0b16a9397d6f3">flow::perf::Clock_type::S_CPU_TOTAL_HI_RES</a></div><div class="ttdeci">@ S_CPU_TOTAL_HI_RES</div><div class="ttdoc">Measures processor time (user- and kernel-level total) spent by the current process; this is the high...</div></div>
<div class="ttc" id="anamespaceflow_1_1perf_html_ad61fb186191e4bb824d14601d11a2eb0ae06b569eb44aff6a567186f4eddb12ed"><div class="ttname"><a href="namespaceflow_1_1perf.html#ad61fb186191e4bb824d14601d11a2eb0ae06b569eb44aff6a567186f4eddb12ed">flow::perf::Clock_type::S_CPU_USER_LO_RES</a></div><div class="ttdeci">@ S_CPU_USER_LO_RES</div><div class="ttdoc">Along with S_CPU_SYS_LO_RES, measures processor time (user-level) spent by the current process; this ...</div></div>
<div class="ttc" id="anamespaceflow_1_1perf_html_af4b93cb0638c3d0bcfcf36903f0a3e46"><div class="ttname"><a href="namespaceflow_1_1perf.html#af4b93cb0638c3d0bcfcf36903f0a3e46">flow::perf::operator-</a></div><div class="ttdeci">Duration_set operator-(const Time_pt_set &amp;to, const Time_pt_set &amp;from)</div><div class="ttdoc">Returns a Duration_set representing the time that passed since from to to (negative if to happened ea...</div><div class="ttdef"><b>Definition:</b> <a href="clock__type_8cpp_source.html#l00026">clock_type.cpp:26</a></div></div>
<div class="ttc" id="anamespaceflow_1_1perf_html_aff603762f38b9e3e3d50b833e09c3f91"><div class="ttname"><a href="namespaceflow_1_1perf.html#aff603762f38b9e3e3d50b833e09c3f91">flow::perf::operator/=</a></div><div class="ttdeci">Duration_set &amp; operator/=(Duration_set &amp;target, uint64_t div_scale)</div><div class="ttdoc">Divides each Duration in the target Duration_set by the given numerical constant.</div><div class="ttdef"><b>Definition:</b> <a href="clock__type_8cpp_source.html#l00068">clock_type.cpp:68</a></div></div>
<div class="ttc" id="anamespaceflow_1_1util_html_a8afd30c50bcd670d45442df49d1da484"><div class="ttname"><a href="namespaceflow_1_1util.html#a8afd30c50bcd670d45442df49d1da484">flow::util::ostream_op_to_string</a></div><div class="ttdeci">void ostream_op_to_string(std::string *target_str, T const &amp;... ostream_args)</div><div class="ttdoc">Writes to the specified string, as if the given arguments were each passed, via &lt;&lt; in sequence,...</div><div class="ttdef"><b>Definition:</b> <a href="util_2util_8hpp_source.html#l00367">util.hpp:367</a></div></div>
<div class="ttc" id="astring__ostream_8hpp_html"><div class="ttname"><a href="string__ostream_8hpp.html">string_ostream.hpp</a></div></div>
<div class="ttc" id="astructflow_1_1perf_1_1Duration__set_html"><div class="ttname"><a href="structflow_1_1perf_1_1Duration__set.html">flow::perf::Duration_set</a></div><div class="ttdoc">Convenience wrapper around an array&lt;Duration, N&gt;, which stores a duration for each of the N possible ...</div><div class="ttdef"><b>Definition:</b> <a href="clock__type__fwd_8hpp_source.html#l00185">clock_type_fwd.hpp:186</a></div></div>
<div class="ttc" id="astructflow_1_1perf_1_1Duration__set_html_ae7d89b9e16f45dc59b27092e0496ce4f"><div class="ttname"><a href="structflow_1_1perf_1_1Duration__set.html#ae7d89b9e16f45dc59b27092e0496ce4f">flow::perf::Duration_set::m_values</a></div><div class="ttdeci">std::array&lt; Duration, size_t(Clock_type::S_END_SENTINEL)&gt; m_values</div><div class="ttdoc">The underlying data, directly readable and writable by user. NOT ZERO-INITIALIZED ON CONSTRUCTION (or...</div><div class="ttdef"><b>Definition:</b> <a href="clock__type__fwd_8hpp_source.html#l00188">clock_type_fwd.hpp:188</a></div></div>
<div class="ttc" id="astructflow_1_1perf_1_1Time__pt__set_html"><div class="ttname"><a href="structflow_1_1perf_1_1Time__pt__set.html">flow::perf::Time_pt_set</a></div><div class="ttdoc">Convenience wrapper around an array&lt;Time_pt, N&gt;, which stores a time point for each of the N possible...</div><div class="ttdef"><b>Definition:</b> <a href="clock__type__fwd_8hpp_source.html#l00195">clock_type_fwd.hpp:196</a></div></div>
<div class="ttc" id="astructflow_1_1perf_1_1Time__pt__set_html_a9867f05832f22c6aceb340c0ba697dbc"><div class="ttname"><a href="structflow_1_1perf_1_1Time__pt__set.html#a9867f05832f22c6aceb340c0ba697dbc">flow::perf::Time_pt_set::m_values</a></div><div class="ttdeci">std::array&lt; Time_pt, size_t(Clock_type::S_END_SENTINEL)&gt; m_values</div><div class="ttdoc">The underlying data, directly readable and writable by user. NOT ZERO-INITIALIZED ON CONSTRUCTION (or...</div><div class="ttdef"><b>Definition:</b> <a href="clock__type__fwd_8hpp_source.html#l00198">clock_type_fwd.hpp:198</a></div></div>
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